词汇	主曲柄销
释义	主曲柄销 main crank pin
随便看	safety factor for ultimate load safety factor laoding factor safety factor method safety factor of anti-overturn safety factor of cord strength safety factor of hydraulic structure safety factor of insulation safety factor of liquefaction safety factor of shear stress safety factor of slope safety factor of slope stability safety factor of stability safety factor of strength safety factors safety factor, SF safety failure safety fairway safety falling velocity safety fastener safety fear safety feature safety features Safety features include a switch safety feature test safety feeling